Arduino Tetris MAX7219 controling trough Android (NodMCU and Blynk)

Hey i tried to make tetris game on dot matrix max7219 and i want to use android trough NodMcu and Blynk app as a control button, but i have problem here's the code :

#include "MatrixMathInt.h"
#include "LedControl.h"
#include <SoftwareSerial.h>
SoftwareSerial ArduinoUno (3, 2);

#define SCREENS (4)
#define SCREEN_SIZE (8)
#define COLS (8)
#define ROWS (32)
#define CENTER (3)

LedControl lc=LedControl(11,13,10,SCREENS);

unsigned long delaytime=500;
const long interval = 1000; 
unsigned long previousMillis = 0;
bool gameOver = false;

int world[ROWS][COLS] = {};

const int pinL;
const int pinU;
const int pinR;
const int pinD;

#define PIEZED (4)
#define PIEZES (7)
int piezes[PIEZES][PIEZED][PIEZED] = {
  {
    {1,0,0},
    {1,0,0},
    {1,0,0},
    {1,0,0},
  },
  {
    {1,0,0},
    {1,1,0},
    {1,0,0},
  },
  {
    {1,1,0},
    {1,1,0},
    {0,0,0},
  },
  {
    {1,0,0},
    {1,0,0},
    {1,1,0},
  },
  {
    {0,1,0},
    {0,1,0},
    {1,1,0},
  },
  {
    {1,0,0},
    {1,1,0},
    {0,1,0},
  },
  {
    {0,1,0},
    {1,1,0},
    {1,0,0},
  },
};
  
int pieze[PIEZED][PIEZED] = {};
int piezeX = CENTER;
int piezeY = 0;
int incomingByte = 0;   // for incoming serial data

void setup() {
  Serial.begin(9600);
  ArduinoUno.begin(4800);
  randomSeed(analogRead(0));
  //we have already set the number of devices when we created the LedControl
  int devices=lc.getDeviceCount();
  //we have to init all devices in a loop
  for(int address=0;address<devices;address++) {
    /*The MAX72XX is in power-saving mode on startup*/
    lc.shutdown(address,false);
    /* Set the brightness to a medium values */
    lc.setIntensity(address,1);
    /* and clear the display */
    lc.clearDisplay(address);
  }
  Serial.println("starting....");
  generatePieze();

  pinMode(pinR, INPUT);
  pinMode(pinL, INPUT);
  pinMode(pinU, INPUT);
  pinMode(pinD, INPUT);
  
}

void beginGameOver(){
  Serial.println("gameover" );
  for(int screen=0;screen<SCREENS;screen++){
    for(int row=0;row<SCREEN_SIZE;row++) {
      lc.setColumn(SCREENS-screen-1, row, B11111111);
      delay(100);
    }
  }
  int newWorld[ROWS][COLS] = {};
  Matrix.Copy((int*)newWorld, ROWS, COLS,(int*)world);

  piezeX = CENTER;
  piezeY = -1;
  generatePieze();
  gameOver = false;
  render(world);
}

void generatePieze(){
  int randNumber = random(PIEZES);
  Matrix.Copy((int*)piezes[randNumber], PIEZED, PIEZED,(int*)pieze);
};

void checkLine(){
  for(int row=0;row<ROWS;row++) {
    int count = 0;
    for(int col=0;col<COLS;col++) {
      count = count + world[row][col];
      if (count >= COLS){
        deleteRow(row);        
      }
     }
  } 
}

void deleteRow(int toDelete){
  int screen = (toDelete / SCREEN_SIZE);
  int row = SCREEN_SIZE - (toDelete - (screen * SCREEN_SIZE)) - 1;
  for(int i=0;i<10;i++) {
    sound(3000);
    lc.setColumn(screen, row, B11111111);
    delay(25);
    lc.setColumn(screen, row, B00000000);
    delay(25);
  }

  for(int row=ROWS;row>0;row--) {
    if(row <= toDelete){
      if(row == 0){
        //world[row] = {};
      } else {
        for(int col=0;col<COLS;col++) {
          world[row][col] = world[row-1][col];        
        }
      }
    }
  }
}

void actions(){
     if (digitalRead(pinR) == HIGH){
      if (validPosition(pieze, piezeY, piezeX+1)){
        moveSound();
        piezeX++;
      } else {
        noMoveSound();
      }
     }

     if (digitalRead(pinL) == HIGH){
      if (validPosition(pieze, piezeY, piezeX-1)){
        moveSound();
        piezeX--;
      } else {
        noMoveSound();
      }
     }

    if (digitalRead(pinD) == HIGH){
      if (validPosition(pieze, piezeY+1, piezeX)){
        moveSound();
        piezeY++;
      } else {
        noMoveSound();
      }
     }

     if (digitalRead(pinU) == HIGH){

         rotatePieze();
     }
  
  if (Serial.available() > 0) {
    // read the incoming byte:
    incomingByte = Serial.read();
    if (incomingByte == 97){ // a
      if (validPosition(pieze, piezeY, piezeX-1)){
        piezeX--;
      }
     }
     if (incomingByte == 100){ // d
      if (validPosition(pieze, piezeY, piezeX+1)){
        piezeX++;
      }
     }
     if (incomingByte == 115){ // s
      if (validPosition(pieze, piezeY+1, piezeX)){
        piezeY++;
      }
     }
     
     
     if (incomingByte == 119){ // w
        rotatePieze();
      }
  }
}

void moveSound(){
  sound(800);
}
void noMoveSound(){
  sound(200);
}


void sound(int frequency){
  tone(8, frequency, 16);
}

void rotatePieze(){
  int newPieze[PIEZED][PIEZED] = {};
  int tPieze[PIEZED][PIEZED] = {};
  Matrix.Transpose((int*)pieze,PIEZED, PIEZED, (int*)newPieze);
  for(int row=0;row<PIEZED;row++) {
    for(int col=0;col<PIEZED;col++) {
      tPieze[row][PIEZED-col-1] = newPieze[row][col];
    }
  }
  
  for(int i=0; i<PIEZED; i++){
    if(tPieze[0][0] + tPieze[1][0] + tPieze[2][0] == 0){
      for(int row=0;row<PIEZED;row++) {
        for(int col=1;col<PIEZED;col++) {
          tPieze[row][col-1] = tPieze[row][col];    
        }
        tPieze[row][PIEZED-1] = 0;
      }
    }
  } 

  if (validPosition(tPieze, piezeY, piezeX)){
    moveSound();
    Matrix.Copy((int*)tPieze, PIEZED, PIEZED,(int*)pieze);
  } else {
    noMoveSound();
  }
}

bool validPosition(int mPieze[PIEZED][PIEZED], int destY, int destX){
  bool valid = true;
  int x = 0;
  int y = 0;

  for(int row=destY;row<(PIEZED+destY);row++){
    for(int col=destX;col<(PIEZED+destX);col++){
      if (mPieze[y][x] == 1){
        if(world[row][col] == 1){
          return false;
        }
        if(col>COLS-1){
          return false;
        }
        if(col < 0){
          return false;
        }
        if(row > ROWS-1){
          return false;
        }
      }
      x++;
    }
    x = 0;
    y++;
  }
}

bool collision(int big[ROWS][COLS], int small[PIEZED][PIEZED], int bM, int bN, int sM, int sN, int pY, int pX){
  int mergeX = 0;
  int mergeY = 0;
  for(int row=0;row<bM;row++) {
    for(int col=0;col<bN;col++) {
      if( col>= pX && mergeX < PIEZED && row >= pY && mergeY < PIEZED ){
        if (small[mergeY][mergeX] == 1 && big[row+1][col] == 1) {
          return true;
        }

        if (row == ROWS-1 && small[mergeY][mergeX] == 1){
          return true;
        }
        if( col>= piezeX && mergeX < PIEZED){
          mergeX++;
        }
      }
    }

    mergeX = 0;
    if( row >= pY && mergeY < PIEZED){
      mergeY++;
    }
  }
  return false;
}

void mergeMatrix(int big[ROWS][COLS], int small[PIEZED][PIEZED], int bM, int bN, int sM, int sN, int pY, int pX){
  for(int row=0;row<bM;row++) {
    for(int col=0;col<bN;col++) {
      if (col >= pX && col < pX + PIEZED  && row >= pY && row < pY + PIEZED){
        int val = small[row - pY][col - pX];
        if (val == 0) {
          val = big[row][col];
        }
        big[row][col] = val;
      }
    }
  }
}

void render(int matrix[ROWS][COLS]){
  int row = 0;
        
  for(int screen=0;screen<SCREENS;screen++) {

    int matrox[SCREEN_SIZE][SCREEN_SIZE] = {};    
    for(int srow=0;srow<SCREEN_SIZE;srow++) {
      for(int col=0;col<COLS;col++) {
        matrox[srow][col] = matrix[row][col];
      }
      row++;
    }
  
    int matrex[SCREEN_SIZE][SCREEN_SIZE] = {};    
    Matrix.Transpose((int*)matrox,SCREEN_SIZE, SCREEN_SIZE, (int*)matrex);
    for(int srow=0;srow<SCREEN_SIZE;srow++) {
      for(int col=0;col<COLS;col++) {
        lc.setLed(screen,srow,SCREEN_SIZE-col-1,matrex[srow][col]);
      }
    }
  }
}

void loop() {
  while (ArduinoUno.available() > 0) {
    int val = ArduinoUno.parseInt();
    if (ArduinoUno.read() == '\n') {
      Serial.println(val);
      if (val == HIGH) {
        digitalWrite (pinL, HIGH);
      }
      else {
        Serial.println("No");
      }
    }
  }
  
  unsigned long currentMillis = millis();

  if (currentMillis - previousMillis >= interval) {
    previousMillis = currentMillis;

    if (collision(world, pieze, ROWS, COLS, PIEZED, PIEZED, piezeY, piezeX)){
      sound(800);
      mergeMatrix(world, pieze, ROWS, COLS, PIEZED, PIEZED, piezeY, piezeX);
      if(piezeY <= 0){
        gameOver = true;
      }
      piezeY = 0;
      piezeX = CENTER;
      generatePieze();
    } else {
      piezeY++;
    }
  
    checkLine();
  }
  
  if (gameOver == true){
    beginGameOver();  
  } else {
  int view[ROWS][COLS] = {};
  Matrix.Copy((int*)world, ROWS, COLS,(int*)view);

  mergeMatrix(view, pieze, ROWS, COLS, PIEZED, PIEZED, piezeY, piezeX);
  render(view);
  actions();
  }
  
}

The max7219 wont run because this code, event i place all function inside this code the max7219 won't run :

while (ArduinoUno.available() > 0) {
    int val = ArduinoUno.parseInt();
    if (ArduinoUno.read() == '\n') {
      Serial.println(val);
      if (val == HIGH) {
        digitalWrite (pinL, HIGH);
      }
      else {
        Serial.println("No");
      }
    }
  }

so i dont know anymore how to solve this problem please. (main code generatePieze();

Tetris Source Code : tetris-arduino/tetris.ino at master · ceritium/tetris-arduino · GitHub

Your post was MOVED to its current location as it is more suitable.

Could you also take a few moments to Learn How To Use The Forum.

Other general help and troubleshooting advice can be found here.

It will help you get the best out of the forum in the future.

Read this tutorial: Serial Input Basics - updated to learn how to properly send/receive data. parseInt() has a timeout of 1s which can slow you down a lot.

That code is also horribly bloated. You are using int data type for all your matrices, yet they contain 0/1. Programming on a MCU is not like on your PC where you have unlimited memory.